1)   2D FFT/iFFT plugin 1.0
User-friendly 2D FFT/iFFT (Fast Fourier Transform) plug-in for Adobe PhotoShop compatible plug-in hosts. It uses one of the fastest implementations of the Discrete Fourier Transform and has many applications including periodic noise removal etc.

 2)   Frequency Analyzer 2.0
This program splits sound taken from the microphone into basic frequencies and displays them in real-time. Whistle to the microphone and see the plot move up and down with the pitch change. This uses the Fast Fourier Transform (FFT) Transform.